package com.example.springcloud.service.impl;

import com.example.springcloud.service.IMessageProvider;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.support.MessageBuilder;

import javax.annotation.Resource;
import java.util.UUID;

/**
 * @ClassName MessageProviderImpl
 * @Author Admin
 * @Date 2020/9/10 12:05
 * @Version 1.0
 **/
@EnableBinding(Source.class) //定义消息的推送管道
@Slf4j
public class MessageProviderImpl implements IMessageProvider {
    @Resource
    private MessageChannel output;  //消息发送管道

    @Override
    public String sendMessage() {
        String serial = UUID.randomUUID().toString();
        output.send(MessageBuilder.withPayload(serial).build());
        log.info("*************serial: " + serial);
        return null;
    }
}
